001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.master;
019
020import java.util.Map;
021import org.apache.hadoop.hbase.metrics.BaseSourceImpl;
022import org.apache.hadoop.hbase.metrics.Interns;
023import org.apache.hadoop.metrics2.MetricsCollector;
024import org.apache.hadoop.metrics2.MetricsRecordBuilder;
025import org.apache.yetus.audience.InterfaceAudience;
026
027/**
028 * Hadoop2 implementation of MetricsMasterSource. Implements BaseSource through BaseSourceImpl,
029 * following the pattern
030 */
031@InterfaceAudience.Private
032public class MetricsMasterProcSourceImpl extends BaseSourceImpl implements MetricsMasterProcSource {
033
034  private final MetricsMasterWrapper masterWrapper;
035
036  public MetricsMasterProcSourceImpl(MetricsMasterWrapper masterWrapper) {
037    this(METRICS_NAME, METRICS_DESCRIPTION, METRICS_CONTEXT, METRICS_JMX_CONTEXT, masterWrapper);
038  }
039
040  public MetricsMasterProcSourceImpl(String metricsName, String metricsDescription,
041    String metricsContext, String metricsJmxContext, MetricsMasterWrapper masterWrapper) {
042    super(metricsName, metricsDescription, metricsContext, metricsJmxContext);
043    this.masterWrapper = masterWrapper;
044
045  }
046
047  @Override
048  public void init() {
049    super.init();
050  }
051
052  @Override
053  public void getMetrics(MetricsCollector metricsCollector, boolean all) {
054    MetricsRecordBuilder metricsRecordBuilder = metricsCollector.addRecord(metricsName);
055
056    // masterWrapper can be null because this function is called inside of init.
057    if (masterWrapper != null) {
058      metricsRecordBuilder.addGauge(Interns.info(NUM_MASTER_WALS_NAME, NUM_MASTER_WALS_DESC),
059        masterWrapper.getNumWALFiles());
060      Map<String, Long> oldestProcedureAgeByType = masterWrapper.getOldestProcedureAgeByType();
061      metricsRecordBuilder.addGauge(
062        Interns.info(OLDEST_PROCEDURE_AGE_NAME, OLDEST_PROCEDURE_AGE_DESC),
063        oldestProcedureAgeByType.values().stream().mapToLong(Long::longValue).max().orElse(0L));
064      oldestProcedureAgeByType.forEach((procedureType, age) -> metricsRecordBuilder.addGauge(
065        Interns.info(OLDEST_PROCEDURE_AGE_NAME + "_" + procedureType, OLDEST_PROCEDURE_AGE_DESC),
066        age));
067    }
068
069    metricsRegistry.snapshot(metricsRecordBuilder, all);
070    if (metricsAdapter != null) {
071      metricsAdapter.snapshotAllMetrics(registry, metricsRecordBuilder);
072    }
073  }
074
075}